Warning signal



E. AUHERO.

WARNING SIGNAL.

APPLlcATioN man JUNE 21,1921.

@zZ/t1* Patented Sept. 19, 1922.

1,429,217 PATENT OFFICE.

EMANUEL AUFIERO, OF BROOKLYN, NEW YORK.

WARNING SIGNAL.

Application led June 27,

To all whom t may concern Be it known that l, EMANUEL Aurrnno, a citizen ofthe United States, residing at Brooklyn, in the county of lKings, State of New York, have invented certain new and useful Improvements in llarning Signals; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which. it appertains to make and use the same.

The common type of automobile horn con- .sists essentially of a metallic diaphragm adapted to bevibrated by a rotating serrated actuator which engages a striking pin or anvil attached to the center of the dia-A The diaphragm is customarily phragin. mounted across the open side of a sheet metal support or casing and the actuator is mounted directly on the armature shaft of a small. yelectric motor contained in a sheet metal casing usually supported and project ing rearwardly from the diaphragm Acasing. The shaft of the motor isordinarily perpendicular to the plane of the diaphragn'i and the motor shaft is offset somewhat from the center of the diaphragm so that the scrrations projecting axially from the rim of the actuator will engage the anvil on the diaphragm. j f

The reaction from the engagement of the actuator and anvil must be taken up by a thrust bearing at the end of the armature shaft remote from the diaphragm, andas there is more or less wear in the bearing, also in the contacting` faces of the actuator and anvil, it is highly desirable that this shaft bearing be adjustable, and in autoinobile horns of the better grade various means are provided for effecting the adjustment be sold within the price limits of an electric.

motor horn it has heretofore been difficult to provide a satisfactory structure in which the necessarily accurate, and at same Ltime easy,` adjustment may be accomplished.

It is the object of the present invention 1921. Serial No. 480,550.

to provide a motor structure for electric horns of this character wherein the armature shaft is supported for adjustment as a whole relatively to the motor frame by a simple, inexpensive device, adding but little to the cost ofy the horn, by means of which the armature shaft may be positively adjusted in both directions to take up the wear of the contacting actuator and anvil.

A .further object of the invention is to provide a device of this'kind wherein, in addition to the above mentioned adjustment, the shaft bearings themselves may be relatively adjustable to take up wear in the bearings,

A further object of the invention is to provide! a device of this kind which is particularly adaptable for use in connection with the electric motor construction shown in my prior Patent No, 1,414,612, granted May 2, 1922. In the accompanying drawings I have illustrated a preferred embodiment of mv improved horn, and in said drawings, E

Figure l is a vertical sectional View of the horn; and

Fig. 2 is a plan view of thehorn casing shown in section.

Referring to the drawings, l indicates -t-lie diaphragm casing across the open face tangular portion ofthe frame, and the armature shaft 6 is mounted for rotation in the end walls of the frame, the shaft projecting at its forward end through the frame and .diaphragm casing to receive the actuator 7. The actuator is threaded on thev reduced end of the shaft 6 and is positioned for its teeth to engage 'the anvil 8 of the diaphragm.

The end of the shaft 6 projects through the actuator 7 and at its end is ground to .provide a bearing point which is engaged by a bearing cup 9 supported at the'end of the depending arm l() ofa U-shaped bar 11 which. is supported to lie above the armature shaft and parallel with it, preferably in the manner shown in the drawings. The bar 11 is preferably made in two pieces for convenience in assembling, the two pieces being rigidly connected,together', for instance by means of screws 12, in the manner shown in the drawing. The rear depending arm 13 of the bar 11 lies beyond the end wall of the v motor frame and carries at its end an adjust- `able bearing cup 14 positioned to receive the conical rear end of the shaft 6 which also projects through the frame member.

The U-shaped bar 11 is supported for adjustment as ay whole in yparallelism with the shaft `Gby means of an adjusting screw l5 threaded in the rear bar of the motor frame and projecting through the bearing inthe depending arm 13 of the bar 11. The screw 15 isprovidcdwith a collar 16 intermediate its ends,- and a lock nut is provided by means of which the part 13 may i be clamped against the collar after the desired adjustment is obtain-ed.

`The motor is enclosed in the usual motor housing 17 which fits over the rim of the casing l and is held in place 'by screws threaded into the turned over ends of the front frame piece in the manner described in my co-pending application above `referred to.

By this arrangement the casing is readily removable to give access to the two adjusting screws 1a and 15. l

The adjustment of the actuator 7 with relation to the anvil 8, that is, the depth ofl the projection of the anvil between the teeth of the actuator, determines the tone of the lhorn, and :there is a particu-lar point of adjustment for-ia-particular speed of rotation at which the horn operates to best advantage. This adjustment is obtained in the first place by adjusting the screw 15 which moves the armature shaft as a whole toward and away from the anvil. As the actuator and anvil wear so that the depth of engagement becomes less, the shaft may be further maintain the bar in parallelism with the" motor shaft, and with the ends-of the bar containing the,` thrust bearings in alinement with the ends of the shaft.

My improvement is particularly designed fon `coeperation with the motor structure llmwnm ymy copending application menalld above, but may obviously be used in with any type of horn motor th ands of the shaftl are accessible and sufficient clear space can be found within the casing forthe bar which supports the bearings. i

I claim:

1. In a warning signalfthe combination of a diaphragm, an actuator therefor, a shaft for saidv actuator, a frame by which said shaft is supported and means for adjusting y said actuator toward and from said diaphragm comprising an adjustable member independent of said frame and engaging said. shaft at both ends thereof.

2. In a warning signal the combination of a diaphragm, an actuator therefor, an electric motor, said motor having a frame and an armature shaft on which said actuator is mounted, said shaft being adjustable independently of said frame, and means for adjusting said actuator` toward and from said diaphragm comprising `an adjustable mem` ber engaging said shaft at the opposite sides of said armature.

3. In a warning signal the combination of a Ciiaphragm, anactuator therefor, a shaft for said actuator, a frame by which said shaft is supported and means for adjusting said actuator toward and from said diaphragm comprisinga member mounted foradjustment in parallelism with the actuator shaft, and bearings for the opposite `ends of said actuator shaft carried by said member. y

4:. In a warning signal, thecombination of a diaphragm, an actuator therefor, av` j shaft' for said actuator, a frame by which 100 said shaft is supported, and means for adjusting' saidactuator toward and from said diaphragm comprising an adjustablemember independent of said frame and provided with bearings engaging said shaft at both ends thereof. v

5. In a warning signal, the combination of a diaphragm, anactuator therefor, a` shaft for said actuator, a frame by which said shaft` is supported, and means for adjusting said actuator Vt0- ward and from said diaphragm comprising an adjustable member independent' of said frame and provided with bearings j engaging said shaft at both ends thereof, 11h one of saidbearings beingadjustable with Y respect to said member. f

6. In a warning signal, the combination of a diaphragm, an actuator therefor, a

shaft for said' actuator, a frame by which 120 said shaft is supported, and means for adjusting said shaft toward and from said ,diaphragm comprising a member mounted for adjustment independent of said frame and thrust bearings engaging the opposite ends of said actuator shaft carried by said member.

7. In a warning signal, the combination of a diaphragm, an actuator therefor, a shaft for said actuator, a frame by which said shaft is supported, rigid bearings for the opposite ends of said shaft and means independent of said frame for bodily adjusting both said bearings simultaneously 1n parallelism with the axis of said shaft to thereby adjust said actuator toward and from said diaphragm.

8. In a Warning signal, the combination of a diaphragm, an actuator therefor, a shaft for said actuator, a frame by which said shaft is supported, bearings for the opposite ends of said shaft,means independent of said frame for Simultaneously adjusting both said bearings in parallelism With the aXis of said shaft to thereby adjust said actuator toward and from said diaphragm, and means for independently adjusting one of said bearings.

9. In a Warning signal, the combination of a diaphragm, an actuator therefor, a shaft for said actuator, a frame by which said shaft is supported, rigid thrust bean ings engaging the opposite ends of said Shaft, and means for bodily adjusting both said bearings simultaneously in parallelism With the axis of said shaft to thereby adjust said actuator toWard and from said diaphragm.

l0. In a Warning signal the combination of a diaphragm, an actuator for vibrating said diaphragm, an electric motor for rotating said actuator, said motor having a fixed frame, an armature shaft on Which said actuator is mounted, said shaft having bearings in said motor frame, the ends of the shaft projecting beyond said frame, and means for adjusting said shaft toward and from the diaphragm comprising a member supported on said motor frame for adjustment in parallelism With said motor shaft, said member having parts engaging the projecting ends of said armature shaft.

l1. In a Warning signal the combination of a diaphragm, an actuator for vibrating said diaphragm, an electric motor for rotating said actuator, said motor having a fixed frame, an armature shaft on which said actuator is: mounted, said shaft having bearings in said motor frame, the ends of the shaft projecting beyond said frame, and means for adjusting said shaft toward and from the diaphragm, comprising a member extending in parallelism With said armature shaft and adjacent said motor frame, said member having parts engaging the projecting ends of said armature shaft and an adjusting screw connecting said member with said motor frame whereby the adjustment of the screw shifts the member and the armature shaft bodily toward and from the diaphragm.

12. In a Warning signal the combination of a diaphragm, an actuator for vibrating saiddiaphragm, an electric motor for rotating said actuator, said motor having a fixed frame, an armature shaft on which said actuator is mounted, said shaft having bearings in said motor frame, the ends of the shaft projecting beyond said frame, means for adjusting said shaft toward and from the diaphragm comprising a member sup ported on said motor frame for adjustment in parallelism with said motor shaft, and bearings carried by said member engaging the projecting ends of said armature shaft, one of said bearings being adjustable With relation to said member.

13. In a Warning signal the combination cf a diaphragm, an actuator for vibrating said diaphragm, a casing for said diaphragm, said casing enclosing said actuator, a motor shaft on which said actuator is mounted, said shaft projecting through said diaphragm casing and also through said actuator, a motor frame supported to the rear of said diaphragm casing, said motor shaft projecting through said frame at the end opposite said diaphragm casing, and means for adjusting said motor shaft toward and from said diaphragm comprising a member extending in parallelism With said motor shaft, said member being supported at one end by said diaphragm casing and at the other end by said motor frame, means for adjusting said member in parallelism With said motor shaft and shaft bearings for said motor shaft carried by said member and engaging the projecting ends of said motor shaft.

In testimony whereof I aflix my signature.

EMANUEL AUFIERO. 

